PIR Motion Sensor Driving Circuit

Discussion in 'General Electronics Chat' started by Guest3123, Feb 5, 2016.

  1. Guest3123

    Thread Starter Member

    Oct 28, 2014
    312
    18
    PIR Motion Sensor, Driving a, n-Channel MOSFET Circuit

    Just wondering if my circuit diagram is accurate, or correct. When it detect motion, it sends out 3.3vdc to an n-Channel Mosfet (GATE).

    The load can be anything I want to power, requires DC power only.

    Hunted000694.jpg
    Hunted000695.jpg



    So what do you think? Is it correct?

    Also here is the link to the PIR on eBay. Clicking Here, will take you to the product page on eBay.

    683628260_o.jpg 710846587_o.jpg


    PIR Specifications :
    Operating voltage range : DC 4.5-20V
    Quiescent Current : <50uA
    Level output : High 3.3 V /Low 0V
    Trigger : L can not be repeated trigger/H can be repeated trigger(Default repeated trigger)
    Delay time : 5-200S(adjustable) the range is (0.xx second to tens of second)
    Block time : 1S(default)Can be made a range(0.xx to tens of seconds
    Board Dimensions : 32mm*24mm
    Angle Sensor : <100 ° cone angle
    Operation Temp : -15℃-+70℃
    Lens size sensor : Diameter:23mm(Default)

    Also, for the n-Channel Mosfet, If you Click Here, you will be directed to Mouser Electronics, for the product page.

    n-Channel MOSFET Specifications :
    Mouser Part # : 942-IRLB3034PBF
    Manufacturer Part : IRLB3034PBF
    Product Category : MOSFET
    RoHS : [​IMG] Details
    Mounting Style : Through Hole
    Package / Case : TO-220-3
    Number of Channels : 1 Channel
    Transistor Polarity : N-Channel
    Vds - Drain-Source Breakdown Voltage : 40 V
    Id - Continuous Drain Current : 343 A
    Rds On - Drain-Source Resistance : 1.4 mOhms
    Vgs - Gate-Source Voltage : 20 V
    Vgs th - Gate-Source Threshold Voltage : 2.5 V
    Qg - Gate Charge : 108 nC
    Maximum Operating Temperature : + 175 C
    Packaging : Tube
    Brand : International Rectifier
    Configuration : Single
    Fall Time : 355 ns
    Forward Transconductance - Min : 286 S
    Minimum Operating Temperature : - 55 C
    Pd - Power Dissipation : 375 W
    Rise Time : 827 ns
    Factory Pack Quantity : 50
    Transistor Type : 1 N-Channel
    Typical Turn-Off Delay Time : 97 ns
    Typical Turn-On Delay Time : 65 ns
     
    Last edited: Feb 5, 2016
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,999
    745
    One battery supply is ok, but it looks good.
     
  3. tracecom

    AAC Fanatic!

    Apr 16, 2010
    3,871
    1,394
    1k seems low for a pull-down resistor.
     
  4. Guest3123

    Thread Starter Member

    Oct 28, 2014
    312
    18
    lol.. I actually didn't think of that.. Thanks.

    How's this... Is this correct using a single power source?

    Hunted000696.jpg
     
  5. Guest3123

    Thread Starter Member

    Oct 28, 2014
    312
    18
    Sorry.. I didn't label the Resistor.. The resistor is a 1 Watt, 15k Ω Resistor, 1% or 0.1% Tolerance, 50 ppm

    The Resistor is just a resistor.. I'm sorry that it has color coding bands on it.. The bands mean nothing in this circuit demonstration. Disregard the color coded bands on the resistor. Maybe I'll just change em anyways.
     
  6. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,999
    745
    1watt is overkill, 1/8watt 5% is fine for 3V.
     
  7. Guest3123

    Thread Starter Member

    Oct 28, 2014
    312
    18
    Updated the Resistor..

    Version 1
    Hunted000699.jpg

    Version 2 That's Brown, Green, Orange, and Violet for the Tolerance.
    Hunted000698.jpg
     
    truwebs likes this.
  8. Guest3123

    Thread Starter Member

    Oct 28, 2014
    312
    18
    Yes, you are correct. 15k, 0.125 watt, 5% is fine.

    1 Watt, 15k, 1% will do fine. It's overkill. I know. It's all I have, and I'm not going to order more Resistors for my project from Mouser.
    Hunted000700.jpg
     
    truwebs likes this.
Loading...